ELECTROACOUSTIC TRANSDUCER AND MOUNTING STRUCTURE OF THE SAME
Ultraschallwandler mit zumindest einem piezo-elektrischen Oszillator
SPEAKER ASSEMBLY WITH RESILIENT MOUNTING ARRANGEMENT FOR A VEHICLE AND ASSOCIATED METHODS
LOUDSPEAKER SYSTEM FOR A VEHICLE AND VEHICLE STRUCTURE COMPRISING SUCH A LOUDSPEAKER SYSTEM
Loudspeaker system for a vehicle and vehicle structure comprising such a loudspeaker system
HOWLING SUPPRESSION DEVICE AND HOWLING SUPPRESSION METHOD
Howling suppression device and howling suppression method
Active noise control system utilizing noise cancellation sounds